- Index
- New and Changed Information
- Preface
- Fabric Overview
- Configuring and Managing VSANs
- SAN Device Virtualization
- Creating Dynamic VSANs
- Configuring and Managing Zones
- Distributing Device Alias Services
- Configuring FCoE
- Configuring Fibre Channel Routing Services and Protocols
- Dense Wavelength Division Multiplexing
- Managing FLOGI, Name Server, FDMI, and RSCN Databases
- Discovering SCSI Targets
- Configuring FICON
- Advanced Features and Concepts
Cisco Fabric Manager Fabric Configuration Guide
Bias-Free Language
The documentation set for this product strives to use bias-free language. For the purposes of this documentation set, bias-free is defined as language that does not imply discrimination based on age, disability, gender, racial identity, ethnic identity, sexual orientation, socioeconomic status, and intersectionality. Exceptions may be present in the documentation due to language that is hardcoded in the user interfaces of the product software, language used based on RFP documentation, or language that is used by a referenced third-party product. Learn more about how Cisco is using Inclusive Language.
- Updated:
- December 21, 2009
Chapter: Discovering SCSI Targets
Discovering SCSI Targets
This chapter describes the SCSI LUN discovery feature provided in switches in the Cisco MDS 9000 Family. It includes the following sections:
•
Displaying SCSI LUN Information
About SCSI LUN Discovery
Small Computer System Interface (SCSI) targets include disks, tapes, and other storage devices. These targets do not register logical unit numbers (LUNs) with the name server.
The name server requires LUN information for the following reasons:
•To display LUN storage device information so an NMS can access this information.
•To report device capacity, serial number, and device ID information.
•To register the initiator and target features with the name server.
The SCSI LUN discovery feature uses the local domain controller Fibre Channel address. It uses the local domain controller as the source FC ID, and performs SCSI INQUIRY, REPORT LUNS, and READ CAPACITY commands on SCSI devices.
The SCSI LUN discovery feature is initiated on demand, through CLI or SNMP. This information is also synchronized with neighboring switches, if those switches belong to the Cisco MDS 9000 Family.
This section includes the following topics:
•About Starting SCSI LUN Discovery
•About Initiating Customized Discovery
•Initiating Customized Discovery
About Starting SCSI LUN Discovery
SCSI LUN discovery is done on demand.
Only Nx ports that are present in the name server database and that are registered as FC4 Type = SCSI_FCP are discovered.
Starting SCSI LUN Discovery
To begin SCSI LUN discovery using Device Manager, follow these steps:
Step 1 Choose FC > Advanced > LUNs.
You see the LUN Configuration dialog box.
Figure 11-1 LUN Configuration Dialog Box
Step 2 Set StartDiscovery to local, remote or both.
Step 3 Choose the DiscoveryType and OS.
Step 4 Click Apply to begin discovery.
About Initiating Customized Discovery
Customized discovery consists of a list of VSAN and domain pairs that are selectively configured to initiate a discovery. The domain ID is a number from 0 to 255 in decimal or a number from 0x0 to 0xFF in hex.
Initiating Customized Discovery
To initiate a customized discovery using Device Manager, follow these steps:
Step 1 Click the VSAN drop-down menu and select the VSAN in which you want to initiate a customized discovery.
Step 2 Click FC > Advanced > LUNs.
You see the LUN Configuration dialog box.
Step 3 Set StartDiscovery to local, remote or both.
Step 4 Fill in the DiscoveryType and OS fields.
Step 5 Click Apply to begin discovery.
Displaying SCSI LUN Information
To display the results of the discovery using Device Manager, follow these steps:
Step 1 Click FC > Advanced > LUNs
You see the LUN Configuration dialog box.
Step 2 Click the LUN tab or the Targets tab.
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